Re: Possible speed enhancement

[Alexander Larsson <alexl redhat com>]

On Sun, 2008-10-05 at 15:34 +0200, Milosz Derezynski wrote:
> Hey Alex,
> 
> Sorry i didn't really mean to say it like that. I at least know how
> much work you put into
> Nautilus over the years (the GIO migration alone was outstanding work).
> 
> I will however try to profile it to see if there maybe isn't still
> something that could be improved regarding
> listing files (i will probably first try to do this with FileChooser
> as it is also rather slow).

Be careful when looking at the profiles though. Its easy to fool
yourself that something is the slow part because its high in the
profile. But the profiles generally only show cpu time, and this hides
the actual time spent which is mainly in disk i/o. So, if something is
taking 90% of the cpu time it may still only be 0.1% of the actual run
time. CPU optimizations are not unimportant, but the most important
thing is to control i/o so you don't do any redundant i/o.